Improve Android connection controls and status display

android/app/src/main/kotlin/com/wirelesstextsyncer/wireless_text_syncer_android/ConnectionService.kt

@@ -40,7 +40,8 @@ class ConnectionService : Service() {
             ACTION_CONNECT -> {
                 val host = intent.getStringExtra(EXTRA_HOST).orEmpty()
                 val port = intent.getIntExtra(EXTRA_PORT, 8181)
-                connectWebSocket(host, port)
+                val name = intent.getStringExtra(EXTRA_NAME).orEmpty()
+                connectWebSocket(host, port, name)
             }
             ACTION_DISCONNECT -> disconnectWebSocket("已断开连接")
         }
@@ -54,8 +55,8 @@ class ConnectionService : Service() {
         super.onDestroy()
     }
 
-    private fun connectWebSocket(host: String, port: Int) {
-        Log.d(tag, "connectWebSocket host=$host port=$port")
+    private fun connectWebSocket(host: String, port: Int, name: String) {
+        Log.d(tag, "connectWebSocket host=$host port=$port name=$name")
         if (host.isBlank()) {
             updateState(connected = false, connecting = false, host = host, port = port, lastError = "请先填写 Windows IP")
             return
@@ -65,6 +66,7 @@ class ConnectionService : Service() {
             .edit()
             .putString(KEY_HOST, host)
             .putInt(KEY_PORT, port)
+            .putString(KEY_NAME, name)
             .apply()
 
         try {
@@ -77,13 +79,14 @@ class ConnectionService : Service() {
                 connecting = false,
                 host = host,
                 port = port,
+                name = name,
                 lastError = exception.message ?: "前台服务启动失败"
             )
             stopSelf()
             return
         }
         currentSocket?.close(1000, "reconnect")
-        updateState(connected = false, connecting = true, host = host, port = port, lastError = null)
+        updateState(connected = false, connecting = true, host = host, port = port, name = name, lastError = null)
 
         val request = Request.Builder().url("ws://$host:$port").build()
         Log.d(tag, "Creating WebSocket ws://$host:$port")
@@ -94,12 +97,22 @@ class ConnectionService : Service() {
                     Log.d(tag, "Ignoring stale WebSocket onOpen")
                     return
                 }
-                updateState(connected = true, connecting = false, host = host, port = port, lastError = null)
+                updateState(connected = true, connecting = false, host = host, port = port, name = name, lastError = null)
                 Handler(Looper.getMainLooper()).post {
                     startForeground(NOTIFICATION_ID, buildNotification(host, port, "已连接"))
                 }
             }
 
+            override fun onMessage(webSocket: WebSocket, text: String) {
+                Log.d(tag, "WebSocket onMessage $text")
+                if (currentSocket != webSocket) {
+                    Log.d(tag, "Ignoring stale WebSocket onMessage")
+                    return
+                }
+
+                updateServiceInfo(text, host, port)
+            }
+
             override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
                 Log.d(tag, "WebSocket onClosed code=$code reason=$reason")
                 if (currentSocket != webSocket) {
@@ -107,7 +120,7 @@ class ConnectionService : Service() {
                     return
                 }
                 currentSocket = null
-                updateState(connected = false, connecting = false, host = host, port = port, lastError = null)
+                updateState(connected = false, connecting = false, host = host, port = port, name = state.name, lastError = null)
                 Handler(Looper.getMainLooper()).post {
                     stopForeground(STOP_FOREGROUND_REMOVE)
                 }
@@ -130,6 +143,7 @@ class ConnectionService : Service() {
                     connecting = false,
                     host = host,
                     port = port,
+                    name = state.name.ifBlank { name },
                     lastError = errorMessage
                 )
                 Handler(Looper.getMainLooper()).post {
@@ -148,6 +162,35 @@ class ConnectionService : Service() {
         stopSelf()
     }
 
+    private fun updateServiceInfo(text: String, fallbackHost: String, fallbackPort: Int) {
+        try {
+            val json = JSONObject(text)
+            if (json.optString("type") != "wirelessTextSyncer.service") {
+                return
+            }
+
+            val serviceHost = json.optString("host", fallbackHost).ifBlank { fallbackHost }
+            val servicePort = json.optInt("port", fallbackPort)
+            val serviceName = json.optString("name").ifBlank { state.name }
+            getSharedPreferences(PREFS, Context.MODE_PRIVATE)
+                .edit()
+                .putString(KEY_HOST, serviceHost)
+                .putInt(KEY_PORT, servicePort)
+                .putString(KEY_NAME, serviceName)
+                .apply()
+            updateState(
+                connected = true,
+                connecting = false,
+                host = serviceHost,
+                port = servicePort,
+                name = serviceName,
+                lastError = null
+            )
+        } catch (exception: Exception) {
+            Log.e(tag, "Failed to parse service info message", exception)
+        }
+    }
+
     private fun buildNotification(host: String, port: Int, status: String): Notification {
         val builder = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             Notification.Builder(this, CHANNEL_ID)
@@ -179,23 +222,26 @@ class ConnectionService : Service() {
         private const val ACTION_DISCONNECT = "wireless_text_syncer.DISCONNECT"
         private const val EXTRA_HOST = "host"
         private const val EXTRA_PORT = "port"
+        private const val EXTRA_NAME = "name"
         private const val CHANNEL_ID = "wireless_text_syncer_connection"
         private const val NOTIFICATION_ID = 1001
         private const val PREFS = "wireless_text_syncer_connection"
         private const val KEY_HOST = "server_host"
         private const val KEY_PORT = "server_port"
+        private const val KEY_NAME = "server_name"
 
         private val mainHandler = Handler(Looper.getMainLooper())
         @Volatile private var currentSocket: WebSocket? = null
         @Volatile private var state = ConnectionStateSnapshot()
         @Volatile var eventSink: EventChannel.EventSink? = null
 
-        fun connect(context: Context, host: String, port: Int) {
-            Log.d("WTS", "ConnectionService.connect requested host=$host port=$port sdk=${Build.VERSION.SDK_INT}")
+        fun connect(context: Context, host: String, port: Int, name: String = "") {
+            Log.d("WTS", "ConnectionService.connect requested host=$host port=$port name=$name sdk=${Build.VERSION.SDK_INT}")
             val intent = Intent(context, ConnectionService::class.java)
                 .setAction(ACTION_CONNECT)
                 .putExtra(EXTRA_HOST, host)
                 .putExtra(EXTRA_PORT, port)
+                .putExtra(EXTRA_NAME, name)
             try {
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                     context.startForegroundService(intent)
@@ -209,6 +255,7 @@ class ConnectionService : Service() {
                     connecting = false,
                     host = host,
                     port = port,
+                    name = name,
                     lastError = exception.message ?: "连接服务启动失败"
                 )
                 throw exception
@@ -273,6 +320,7 @@ class ConnectionService : Service() {
                 "connecting" to snapshot.connecting,
                 "host" to snapshot.host,
                 "port" to snapshot.port,
+                "name" to snapshot.name,
                 "lastError" to snapshot.lastError
             )
         }
@@ -282,13 +330,14 @@ class ConnectionService : Service() {
             connecting: Boolean,
             host: String = state.host,
             port: Int = state.port,
+            name: String = state.name,
             lastError: String? = null
         ) {
             Log.d(
                 "WTS",
-                "updateState connected=$connected connecting=$connecting host=$host port=$port error=$lastError"
+                "updateState connected=$connected connecting=$connecting host=$host port=$port name=$name error=$lastError"
             )
-            state = ConnectionStateSnapshot(connected, connecting, host, port, lastError)
+            state = ConnectionStateSnapshot(connected, connecting, host, port, name, lastError)
             mainHandler.post {
                 eventSink?.success(stateMap())
                 QuickSendTileService.requestTileRefresh()
@@ -301,6 +350,7 @@ class ConnectionService : Service() {
         val connecting: Boolean = false,
         val host: String = "",
         val port: Int = 8181,
+        val name: String = "",
         val lastError: String? = null
     )
 }

android/app/src/main/kotlin/com/wirelesstextsyncer/wireless_text_syncer_android/DiscoveryClient.kt

@@ -0,0 +1,96 @@
+package com.wirelesstextsyncer.wireless_text_syncer_android
+
+import android.content.Context
+import android.net.wifi.WifiManager
+import android.util.Log
+import org.json.JSONObject
+import java.net.DatagramPacket
+import java.net.DatagramSocket
+import java.net.InetAddress
+
+object DiscoveryClient {
+    private const val tag = "WTS"
+    private const val discoveryPort = 8182
+    private const val defaultServicePort = 8181
+
+    fun discover(context: Context): List<DiscoveredService> {
+        Log.d(tag, "Discovery started")
+        val devices = mutableListOf<DiscoveredService>()
+        val seen = mutableSetOf<String>()
+        var multicastLock: WifiManager.MulticastLock? = null
+        try {
+            val wifi = context.applicationContext.getSystemService(Context.WIFI_SERVICE) as? WifiManager
+            multicastLock = wifi?.createMulticastLock("wireless-text-syncer-discovery")
+            multicastLock?.setReferenceCounted(false)
+            multicastLock?.acquire()
+
+            DatagramSocket().use { socket ->
+                socket.broadcast = true
+                socket.soTimeout = 450
+                val request = JSONObject()
+                    .put("type", "wirelessTextSyncer.discovery")
+                    .put("version", 1)
+                    .toString()
+                    .toByteArray(Charsets.UTF_8)
+                val packet = DatagramPacket(
+                    request,
+                    request.size,
+                    InetAddress.getByName("255.255.255.255"),
+                    discoveryPort
+                )
+                socket.send(packet)
+
+                val deadline = System.currentTimeMillis() + 1600
+                while (System.currentTimeMillis() < deadline) {
+                    try {
+                        val buffer = ByteArray(2048)
+                        val response = DatagramPacket(buffer, buffer.size)
+                        socket.receive(response)
+                        val json = JSONObject(String(response.data, 0, response.length, Charsets.UTF_8))
+                        if (json.optString("type") != "wirelessTextSyncer.service") {
+                            continue
+                        }
+
+                        val host = json.optString("host", response.address.hostAddress.orEmpty())
+                        val port = json.optInt("port", defaultServicePort)
+                        val key = "$host:$port"
+                        if (seen.add(key)) {
+                            Log.d(tag, "Discovery found ${json.optString("name", host)} $key")
+                            devices += DiscoveredService(
+                                name = json.optString("name", host),
+                                host = host,
+                                port = port
+                            )
+                        }
+                    } catch (_: Exception) {
+                    }
+                }
+            }
+        } catch (exception: Exception) {
+            Log.e(tag, "Discovery failed", exception)
+        } finally {
+            multicastLock?.let {
+                if (it.isHeld) {
+                    it.release()
+                }
+            }
+        }
+
+        Log.d(tag, "Discovery finished count=${devices.size}")
+        return devices
+    }
+}
+
+data class DiscoveredService(
+    val name: String,
+    val host: String,
+    val port: Int
+) {
+    fun toMap(): Map<String, Any> {
+        return mapOf(
+            "name" to name,
+            "host" to host,
+            "port" to port
+        )
+    }
+}

android/app/src/main/kotlin/com/wirelesstextsyncer/wireless_text_syncer_android/MainActivity.kt

@@ -1,16 +1,10 @@
 package com.wirelesstextsyncer.wireless_text_syncer_android
 
-import android.content.Context
-import android.net.wifi.WifiManager
 import android.util.Log
 import io.flutter.embedding.engine.FlutterEngine
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.plugin.common.EventChannel
 import io.flutter.plugin.common.MethodChannel
-import org.json.JSONObject
-import java.net.DatagramPacket
-import java.net.DatagramSocket
-import java.net.InetAddress
 
 class MainActivity : FlutterActivity() {
     private val tag = "WTS"
@@ -26,9 +20,10 @@ class MainActivity : FlutterActivity() {
                     "connect" -> {
                         val host = call.argument<String>("host").orEmpty()
                         val port = call.argument<Int>("port") ?: 8181
-                        Log.d(tag, "MethodChannel connect host=$host port=$port")
+                        val name = call.argument<String>("name").orEmpty()
+                        Log.d(tag, "MethodChannel connect host=$host port=$port name=$name")
                         try {
-                            ConnectionService.connect(this, host, port)
+                            ConnectionService.connect(this, host, port, name)
                             result.success(null)
                         } catch (exception: Exception) {
                             Log.e(tag, "MethodChannel connect failed", exception)
@@ -73,67 +68,8 @@ class MainActivity : FlutterActivity() {
     }
 
     private fun startDiscovery(result: MethodChannel.Result) {
-        Log.d(tag, "Discovery started")
         Thread {
-            val devices = mutableListOf<Map<String, Any>>()
-            val seen = mutableSetOf<String>()
-            var multicastLock: WifiManager.MulticastLock? = null
-            try {
-                val wifi = applicationContext.getSystemService(Context.WIFI_SERVICE) as? WifiManager
-                multicastLock = wifi?.createMulticastLock("wireless-text-syncer-discovery")
-                multicastLock?.setReferenceCounted(false)
-                multicastLock?.acquire()
-
-                DatagramSocket().use { socket ->
-                    socket.broadcast = true
-                    socket.soTimeout = 450
-                    val request = JSONObject()
-                        .put("type", "wirelessTextSyncer.discovery")
-                        .put("version", 1)
-                        .toString()
-                        .toByteArray(Charsets.UTF_8)
-                    val packet = DatagramPacket(
-                        request,
-                        request.size,
-                        InetAddress.getByName("255.255.255.255"),
-                        8182
-                    )
-                    socket.send(packet)
-
-                    val deadline = System.currentTimeMillis() + 1600
-                    while (System.currentTimeMillis() < deadline) {
-                        try {
-                            val buffer = ByteArray(2048)
-                            val response = DatagramPacket(buffer, buffer.size)
-                            socket.receive(response)
-                            val json = JSONObject(String(response.data, 0, response.length, Charsets.UTF_8))
-                            if (json.optString("type") != "wirelessTextSyncer.service") {
-                                continue
-                            }
-                            val host = json.optString("host", response.address.hostAddress.orEmpty())
-                            val port = json.optInt("port", 8181)
-                            val key = "$host:$port"
-                            if (seen.add(key)) {
-                                Log.d(tag, "Discovery found ${json.optString("name", host)} $key")
-                                devices += mapOf(
-                                    "name" to json.optString("name", host),
-                                    "host" to host,
-                                    "port" to port
-                                )
-                            }
-                        } catch (_: Exception) {
-                        }
-                    }
-                }
-            } catch (exception: Exception) {
-                Log.e(tag, "Discovery failed", exception)
-            } finally {
-                multicastLock?.let {
-                    if (it.isHeld) {
-                        it.release()
-                    }
-                }
-            }
+            val devices = DiscoveryClient.discover(applicationContext).map { it.toMap() }
 
             runOnUiThread {
                 Log.d(tag, "Discovery finished count=${devices.size}")

android/app/src/main/kotlin/com/wirelesstextsyncer/wireless_text_syncer_android/QuickSendActivity.kt

@@ -10,6 +10,7 @@ import android.os.Handler
 import android.os.Looper
 import android.util.Log
 import android.view.Gravity
+import android.view.View
 import android.view.WindowInsets
 import android.view.WindowManager
 import android.view.inputmethod.InputMethodManager
@@ -18,6 +19,7 @@ import android.widget.EditText
 import android.widget.FrameLayout
 import android.widget.ImageView
 import android.widget.LinearLayout
+import android.widget.Switch
 import android.widget.TextView
 
 class QuickSendActivity : Activity() {
@@ -25,11 +27,31 @@ class QuickSendActivity : Activity() {
     private lateinit var sendButton: LinearLayout
     private lateinit var sendIcon: ImageView
     private lateinit var sendLabel: TextView
-    private lateinit var statusText: TextView
+    private lateinit var connectionIcon: ImageView
+    private lateinit var endpointText: TextView
+    private lateinit var deviceNameText: TextView
+    private lateinit var connectionPanel: LinearLayout
+    private lateinit var connectionDot: View
+    private lateinit var connectionTitle: TextView
+    private lateinit var connectionSubtitle: TextView
+    private lateinit var retryText: TextView
+    private lateinit var scanProgress: View
+    private lateinit var devicesContainer: LinearLayout
+    private lateinit var appendEnterToggle: LinearLayout
+    private lateinit var appendEnterSwitch: Switch
+    private val connectionInfoTypeface by lazy {
+        runCatching {
+            Typeface.createFromAsset(assets, "flutter_assets/assets/fonts/WDXLLubrifontSC-Regular.ttf")
+        }.getOrDefault(Typeface.DEFAULT)
+    }
+    private var scanning = false
+    private var appendEnter = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         Log.d("WTS", "QuickSendActivity onCreate")
+        appendEnter = getSharedPreferences(PREFS, Context.MODE_PRIVATE)
+            .getBoolean(KEY_APPEND_ENTER, false)
         buildUi()
         input.requestFocus()
         input.post {
@@ -60,10 +82,164 @@ class QuickSendActivity : Activity() {
         sheet.setBackgroundColor(Color.WHITE)
         sheet.setOnClickListener { }
 
-        statusText = TextView(this)
-        statusText.textSize = 14f
-        statusText.setTextColor(Color.rgb(71, 85, 105))
-        sheet.addView(statusText)
+        val topRow = LinearLayout(this)
+        topRow.gravity = Gravity.CENTER_VERTICAL
+        topRow.orientation = LinearLayout.HORIZONTAL
+        sheet.addView(topRow, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ))
+
+        val connectionSummary = LinearLayout(this)
+        connectionSummary.gravity = Gravity.CENTER_VERTICAL
+        connectionSummary.orientation = LinearLayout.HORIZONTAL
+        topRow.addView(connectionSummary, LinearLayout.LayoutParams(
+            0,
+            dp(64),
+            1f
+        ))
+
+        connectionIcon = ImageView(this)
+        connectionSummary.addView(connectionIcon, LinearLayout.LayoutParams(dp(40), dp(40)))
+
+        val summaryCopy = LinearLayout(this)
+        summaryCopy.orientation = LinearLayout.VERTICAL
+        summaryCopy.gravity = Gravity.CENTER_VERTICAL
+        connectionSummary.addView(summaryCopy, LinearLayout.LayoutParams(
+            0,
+            dp(64),
+            1f
+        ).apply {
+            leftMargin = dp(10)
+        })
+
+        endpointText = TextView(this)
+        endpointText.textSize = 21f
+        endpointText.typeface = Typeface.create(connectionInfoTypeface, Typeface.BOLD)
+        endpointText.setTextColor(Color.rgb(15, 23, 42))
+        endpointText.includeFontPadding = false
+        endpointText.maxLines = 1
+        summaryCopy.addView(endpointText)
+
+        deviceNameText = TextView(this)
+        deviceNameText.textSize = 18f
+        deviceNameText.typeface = connectionInfoTypeface
+        deviceNameText.setTextColor(Color.rgb(100, 116, 139))
+        deviceNameText.includeFontPadding = false
+        deviceNameText.maxLines = 1
+        summaryCopy.addView(deviceNameText, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ).apply {
+            topMargin = dp(2)
+        })
+
+        appendEnterToggle = LinearLayout(this)
+        appendEnterToggle.gravity = Gravity.CENTER_VERTICAL
+        appendEnterToggle.orientation = LinearLayout.HORIZONTAL
+        appendEnterToggle.setPadding(dp(10), 0, dp(4), 0)
+        appendEnterToggle.background = strokeDrawable(Color.WHITE, Color.rgb(226, 232, 240), dp(8).toFloat())
+        appendEnterToggle.isClickable = true
+        appendEnterToggle.isFocusable = true
+        appendEnterToggle.setOnClickListener { toggleAppendEnter() }
+
+        val appendEnterLabel = TextView(this)
+        appendEnterLabel.text = "追加回车"
+        appendEnterLabel.textSize = 13f
+        appendEnterLabel.typeface = Typeface.DEFAULT_BOLD
+        appendEnterLabel.setTextColor(Color.rgb(15, 23, 42))
+        appendEnterToggle.addView(appendEnterLabel, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.WRAP_CONTENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ))
+
+        appendEnterSwitch = Switch(this)
+        appendEnterSwitch.isChecked = appendEnter
+        appendEnterSwitch.setOnCheckedChangeListener { _, isChecked -> setAppendEnter(isChecked) }
+        appendEnterToggle.addView(appendEnterSwitch)
+        topRow.addView(appendEnterToggle, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.WRAP_CONTENT,
+            dp(44)
+        ).apply {
+            leftMargin = dp(10)
+        })
+
+        connectionPanel = LinearLayout(this)
+        connectionPanel.orientation = LinearLayout.VERTICAL
+        connectionPanel.setPadding(dp(14), dp(12), dp(14), dp(12))
+        connectionPanel.background = strokeDrawable(Color.rgb(248, 250, 252), Color.rgb(226, 232, 240), dp(12).toFloat())
+        sheet.addView(connectionPanel, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ).apply {
+            topMargin = dp(10)
+        })
+
+        val connectionHeader = LinearLayout(this)
+        connectionHeader.gravity = Gravity.CENTER_VERTICAL
+        connectionHeader.orientation = LinearLayout.HORIZONTAL
+        connectionPanel.addView(connectionHeader, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ))
+
+        connectionDot = View(this)
+        connectionHeader.addView(connectionDot, LinearLayout.LayoutParams(dp(10), dp(10)))
+
+        val connectionCopy = LinearLayout(this)
+        connectionCopy.orientation = LinearLayout.VERTICAL
+        connectionHeader.addView(connectionCopy, LinearLayout.LayoutParams(
+            0,
+            LinearLayout.LayoutParams.WRAP_CONTENT,
+            1f
+        ).apply {
+            leftMargin = dp(10)
+        })
+
+        connectionTitle = TextView(this)
+        connectionTitle.textSize = 14f
+        connectionTitle.typeface = Typeface.DEFAULT_BOLD
+        connectionTitle.setTextColor(Color.rgb(15, 23, 42))
+        connectionCopy.addView(connectionTitle)
+
+        connectionSubtitle = TextView(this)
+        connectionSubtitle.textSize = 12f
+        connectionSubtitle.setTextColor(Color.rgb(100, 116, 139))
+        connectionCopy.addView(connectionSubtitle, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ).apply {
+            topMargin = dp(2)
+        })
+
+        retryText = TextView(this)
+        retryText.text = "重试"
+        retryText.textSize = 13f
+        retryText.typeface = Typeface.DEFAULT_BOLD
+        retryText.setTextColor(Color.rgb(37, 99, 235))
+        retryText.setPadding(dp(10), dp(6), dp(10), dp(6))
+        retryText.isClickable = true
+        retryText.isFocusable = true
+        retryText.setOnClickListener { scanAndConnect() }
+        connectionHeader.addView(retryText)
+
+        scanProgress = View(this)
+        scanProgress.background = roundedDrawable(Color.rgb(37, 99, 235), dp(2).toFloat())
+        connectionPanel.addView(scanProgress, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            dp(3)
+        ).apply {
+            topMargin = dp(10)
+        })
+
+        devicesContainer = LinearLayout(this)
+        devicesContainer.orientation = LinearLayout.VERTICAL
+        connectionPanel.addView(devicesContainer, LinearLayout.LayoutParams(
+            LinearLayout.LayoutParams.MATCH_PARENT,
+            LinearLayout.LayoutParams.WRAP_CONTENT
+        ).apply {
+            topMargin = dp(10)
+        })
 
         input = EditText(this)
         input.minLines = 3
@@ -117,19 +293,164 @@ class QuickSendActivity : Activity() {
         root.addView(sheet, params)
         setContentView(root)
         refreshState()
+        autoScanIfDisconnected()
     }
 
     private fun refreshState() {
         val state = ConnectionService.stateMap()
         val connected = state["connected"] as? Boolean ?: false
+        val connecting = state["connecting"] as? Boolean ?: false
         val host = state["host"] as? String ?: ""
         val port = state["port"] as? Int ?: 8181
-        statusText.text = if (connected) "● 已连接 $host:$port" else "● 未连接，请先打开主应用连接电脑"
-        statusText.setTextColor(if (connected) Color.rgb(22, 101, 52) else Color.rgb(185, 28, 28))
+        val name = state["name"] as? String ?: ""
+        val lastError = state["lastError"] as? String
+        updateConnectionSummary(connected, connecting, host, port, name)
+        connectionPanel.visibility = if (connected) View.GONE else View.VISIBLE
+        connectionDot.background = roundedDrawable(when {
+            connecting || scanning -> Color.rgb(37, 99, 235)
+            else -> Color.rgb(185, 28, 28)
+        }, dp(5).toFloat())
+        scanProgress.visibility = if (scanning || connecting) View.VISIBLE else View.GONE
+        retryText.visibility = if (!connecting && !scanning) View.VISIBLE else View.GONE
+        when {
+            connecting -> {
+                connectionTitle.text = "正在连接电脑"
+                connectionSubtitle.text = "$host:$port"
+            }
+            scanning -> {
+                connectionTitle.text = "正在寻找附近的电脑"
+                connectionSubtitle.text = "发现一个会自动连接，多个会显示选择"
+            }
+            else -> {
+                connectionTitle.text = lastError ?: "暂未连接电脑"
+                connectionSubtitle.text = "将自动扫描局域网内的桌面端服务"
+            }
+        }
+        devicesContainer.visibility = if (connected) View.GONE else devicesContainer.visibility
         sendButton.isEnabled = connected
         sendButton.alpha = if (connected) 1f else 0.48f
     }
 
+    private fun updateConnectionSummary(
+        connected: Boolean,
+        connecting: Boolean,
+        host: String,
+        port: Int,
+        name: String
+    ) {
+        val iconColor = when {
+            connected -> Color.rgb(22, 163, 74)
+            connecting -> Color.rgb(37, 99, 235)
+            else -> Color.rgb(185, 28, 28)
+        }
+        connectionIcon.setImageResource(when {
+            connected || connecting -> R.drawable.ic_sync_24
+            else -> R.drawable.ic_sync_disabled_24
+        })
+        connectionIcon.setColorFilter(iconColor, PorterDuff.Mode.SRC_IN)
+        endpointText.setTextColor(if (connected) Color.rgb(22, 101, 52) else Color.rgb(15, 23, 42))
+        deviceNameText.setTextColor(if (connected) Color.rgb(21, 128, 61) else Color.rgb(100, 116, 139))
+        endpointText.text = if (host.isBlank()) "未设置地址" else "$host:$port"
+        deviceNameText.text = name.ifBlank { "Windows 桌面端" }
+    }
+
+    private fun scanAndConnect() {
+        if (scanning) {
+            return
+        }
+
+        scanning = true
+        updateConnectionSummary(connected = false, connecting = true, host = "", port = 8181, name = "")
+        connectionTitle.text = "正在寻找附近的电脑"
+        connectionSubtitle.text = "发现一个会自动连接，多个会显示选择"
+        connectionDot.background = roundedDrawable(Color.rgb(37, 99, 235), dp(5).toFloat())
+        retryText.visibility = View.GONE
+        scanProgress.visibility = View.VISIBLE
+        devicesContainer.removeAllViews()
+        devicesContainer.visibility = View.GONE
+
+        Thread {
+            val devices = DiscoveryClient.discover(applicationContext)
+            runOnUiThread {
+                scanning = false
+                when (devices.size) {
+                    0 -> {
+                        updateConnectionSummary(connected = false, connecting = false, host = "", port = 8181, name = "")
+                        connectionTitle.text = "没有发现桌面端"
+                        connectionSubtitle.text = "确认电脑和手机在同一局域网后重试"
+                        connectionDot.background = roundedDrawable(Color.rgb(185, 28, 28), dp(5).toFloat())
+                        retryText.visibility = View.VISIBLE
+                        scanProgress.visibility = View.GONE
+                    }
+                    1 -> connectTo(devices.single())
+                    else -> showDeviceChoices(devices)
+                }
+            }
+        }.start()
+    }
+
+    private fun autoScanIfDisconnected() {
+        val state = ConnectionService.stateMap()
+        val connected = state["connected"] as? Boolean ?: false
+        val connecting = state["connecting"] as? Boolean ?: false
+        if (!connected && !connecting) {
+            scanAndConnect()
+        }
+    }
+
+    private fun showDeviceChoices(devices: List<DiscoveredService>) {
+        updateConnectionSummary(connected = false, connecting = true, host = "", port = 8181, name = "")
+        connectionTitle.text = "选择要连接的电脑"
+        connectionSubtitle.text = "发现 ${devices.size} 个桌面端服务"
+        connectionDot.background = roundedDrawable(Color.rgb(37, 99, 235), dp(5).toFloat())
+        retryText.visibility = View.VISIBLE
+        scanProgress.visibility = View.GONE
+        devicesContainer.removeAllViews()
+        devicesContainer.visibility = View.VISIBLE
+
+        devices.forEach { device ->
+            devicesContainer.addView(createDeviceChoice(device), LinearLayout.LayoutParams(
+                LinearLayout.LayoutParams.MATCH_PARENT,
+                LinearLayout.LayoutParams.WRAP_CONTENT
+            ).apply {
+                bottomMargin = dp(8)
+            })
+        }
+    }
+
+    private fun createDeviceChoice(device: DiscoveredService): TextView {
+        return TextView(this).apply {
+            text = "${device.name}\n${device.host}:${device.port}"
+            textSize = 14f
+            setTextColor(Color.rgb(15, 23, 42))
+            setPadding(dp(12), dp(10), dp(12), dp(10))
+            background = strokeDrawable(Color.WHITE, Color.rgb(203, 213, 225), dp(10).toFloat())
+            isClickable = true
+            isFocusable = true
+            setOnClickListener { connectTo(device) }
+        }
+    }
+
+    private fun connectTo(device: DiscoveredService) {
+        updateConnectionSummary(
+            connected = false,
+            connecting = true,
+            host = device.host,
+            port = device.port,
+            name = device.name
+        )
+        connectionTitle.text = "正在连接电脑"
+        connectionSubtitle.text = "${device.host}:${device.port}"
+        connectionDot.background = roundedDrawable(Color.rgb(37, 99, 235), dp(5).toFloat())
+        retryText.visibility = View.GONE
+        scanProgress.visibility = View.VISIBLE
+        devicesContainer.removeAllViews()
+        devicesContainer.visibility = View.GONE
+        ConnectionService.connect(this, device.host, device.port, device.name)
+        Handler(Looper.getMainLooper()).postDelayed({ refreshState() }, 700)
+        Handler(Looper.getMainLooper()).postDelayed({ refreshState() }, 1800)
+    }
+
     private fun sendAndClose() {
         val text = input.text.toString()
         Log.d("WTS", "QuickSendActivity send length=${text.length}")
@@ -137,7 +458,7 @@ class QuickSendActivity : Activity() {
             return
         }
 
-        if (ConnectionService.sendText(text)) {
+        if (ConnectionService.sendText(text) && (!appendEnter || ConnectionService.sendEnter())) {
             sendButton.background = roundedDrawable(Color.rgb(22, 163, 74), dp(26).toFloat())
             sendIcon.setImageResource(R.drawable.ic_check_24)
             sendIcon.setColorFilter(Color.WHITE, PorterDuff.Mode.SRC_IN)
@@ -151,6 +472,34 @@ class QuickSendActivity : Activity() {
         }
     }
 
+    private fun toggleAppendEnter() {
+        setAppendEnter(!appendEnter)
+    }
+
+    private fun setAppendEnter(value: Boolean) {
+        if (appendEnter == value && appendEnterSwitch.isChecked == value) {
+            return
+        }
+
+        appendEnter = value
+        getSharedPreferences(PREFS, Context.MODE_PRIVATE)
+            .edit()
+            .putBoolean(KEY_APPEND_ENTER, appendEnter)
+            .apply()
+        updateAppendEnterToggle()
+    }
+
+    private fun updateAppendEnterToggle() {
+        if (appendEnterSwitch.isChecked != appendEnter) {
+            appendEnterSwitch.isChecked = appendEnter
+        }
+        appendEnterToggle.background = strokeDrawable(
+            Color.WHITE,
+            if (appendEnter) Color.rgb(147, 197, 253) else Color.rgb(226, 232, 240),
+            dp(16).toFloat()
+        )
+    }
+
     private fun hideKeyboard() {
         val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
         imm.hideSoftInputFromWindow(input.windowToken, 0)
@@ -176,4 +525,9 @@ class QuickSendActivity : Activity() {
     private fun dp(value: Int): Int {
         return (value * resources.displayMetrics.density).toInt()
     }
+
+    companion object {
+        private const val PREFS = "FlutterSharedPreferences"
+        private const val KEY_APPEND_ENTER = "flutter.append_enter"
+    }
 }

android/app/src/main/res/drawable/ic_sync_24.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M12,4V1L8,5L12,9V6C15.31,6 18,8.69 18,12C18,13.01 17.75,13.96 17.3,14.8L18.76,16.26C19.54,15.03 20,13.57 20,12C20,7.58 16.42,4 12,4ZM6,12C6,10.99 6.25,10.04 6.7,9.2L5.24,7.74C4.46,8.97 4,10.43 4,12C4,16.42 7.58,20 12,20V23L16,19L12,15V18C8.69,18 6,15.31 6,12Z" />
+</vector>

android/app/src/main/res/drawable/ic_sync_disabled_24.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M10.86,5.14L8,8L10.86,10.86V8.42C12.58,8.83 14.02,9.96 14.83,11.48L16.31,10C15.15,8.15 13.2,6.84 10.86,6.41V5.14ZM2.81,2L1.39,3.41L5.38,7.4C4.51,8.7 4,10.29 4,12C4,16.42 7.58,20 12,20V23L16,19L12,15V18C8.69,18 6,15.31 6,12C6,10.84 6.33,9.76 6.9,8.85L19.59,21.54L21,20.13L2.81,2ZM18.62,16.6C19.49,15.3 20,13.71 20,12C20,7.58 16.42,4 12,4V1L9.38,3.62L11.1,5.34C11.4,5.13 11.69,4.91 12,4.75V6C15.31,6 18,8.69 18,12C18,13.16 17.67,14.24 17.1,15.15L18.62,16.6Z" />
+</vector>

assets/fonts/WDXLLubrifontSC-OFL.txt

@@ -0,0 +1,94 @@
+Copyright 2025 The WDXL Lubrifont Project Authors (https://github.com/NightFurySL2001/WD-XL-font)
+Copyright 2018-2020 The ZCOOL QingKe HuangYou Project Authors (https://www.github.com/googlefonts/zcool-qingke-huangyou)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

lib/main.dart

@@ -28,12 +28,15 @@ class WirelessTextSyncerApp extends StatelessWidget {
 
 enum SendButtonState { idle, sending, success }
 
+const connectionInfoFontFamily = 'WDXL Lubrifont SC';
+
 class ConnectionSnapshot {
   const ConnectionSnapshot({
     this.connected = false,
     this.connecting = false,
     this.host = '',
     this.port = 8181,
+    this.name = '',
     this.lastError,
   });
 
@@ -47,6 +50,7 @@ class ConnectionSnapshot {
       connecting: map['connecting'] == true,
       host: (map['host'] as String?) ?? '',
       port: (map['port'] as num?)?.toInt() ?? 8181,
+      name: (map['name'] as String?) ?? '',
       lastError: map['lastError'] as String?,
     );
   }
@@ -55,6 +59,7 @@ class ConnectionSnapshot {
   final bool connecting;
   final String host;
   final int port;
+  final String name;
   final String? lastError;
 }
 
@@ -105,10 +110,11 @@ class NativeConnectionApi {
     }
   }
 
-  Future<void> connect(String host, int port) async {
+  Future<void> connect(String host, int port, {String? name}) async {
     await _methodChannel.invokeMethod<void>('connect', {
       'host': host,
       'port': port,
+      if (name != null) 'name': name,
     });
   }
 
@@ -288,9 +294,15 @@ class _InputSyncPageState extends State<InputSyncPage>
       scanning = false;
       discoveredDevices = devices;
     });
+
+    if (devices.length == 1 &&
+        !connection.connected &&
+        !connection.connecting) {
+      await _connectDevice(devices.single);
+    }
   }
 
-  Future<void> _connect() async {
+  Future<void> _connect({String? name}) async {
     final host = hostController.text.trim();
     final portText = portController.text.trim();
     final port = int.tryParse(portText);
@@ -307,15 +319,24 @@ class _InputSyncPageState extends State<InputSyncPage>
     await prefs.setString(_portKey, port.toString());
 
     setState(() {
-      connection = ConnectionSnapshot(connecting: true, host: host, port: port);
+      connection = ConnectionSnapshot(
+        connecting: true,
+        host: host,
+        port: port,
+        name: name ?? '',
+      );
     });
 
     try {
-      await api.connect(host, port);
+      await api.connect(host, port, name: name);
     } on PlatformException catch (exception) {
       _showToast(exception.message ?? '连接失败，请检查地址');
       setState(() {
-        connection = ConnectionSnapshot(host: host, port: port);
+        connection = ConnectionSnapshot(
+          host: host,
+          port: port,
+          name: name ?? '',
+        );
         headerExpanded = true;
       });
     }
@@ -324,7 +345,7 @@ class _InputSyncPageState extends State<InputSyncPage>
   Future<void> _connectDevice(DiscoveredDevice device) async {
     hostController.text = device.host;
     portController.text = device.port.toString();
-    await _connect();
+    await _connect(name: device.name);
   }
 
   Future<void> _disconnect() async {
@@ -333,6 +354,7 @@ class _InputSyncPageState extends State<InputSyncPage>
       connection = ConnectionSnapshot(
         host: hostController.text.trim(),
         port: int.tryParse(portController.text.trim()) ?? 8181,
+        name: connection.name,
       );
       headerExpanded = true;
       sendButtonState = SendButtonState.idle;
@@ -542,11 +564,6 @@ class _InputSyncPageState extends State<InputSyncPage>
 
   Widget _buildHeader(BuildContext context) {
     final colorScheme = Theme.of(context).colorScheme;
-    final statusText = connection.connected
-        ? '已连接: ${connection.host}:${connection.port}'
-        : connection.connecting
-        ? '正在连接: ${connection.host}:${connection.port}'
-        : '未连接 (点击配置)';
 
     return Material(
       color: colorScheme.surface,
@@ -566,29 +583,23 @@ class _InputSyncPageState extends State<InputSyncPage>
                   });
                 },
                 child: SizedBox(
-                  height: 44,
+                  height: 52,
                   child: Row(
                     children: [
-                      _ConnectionIndicator(
-                        connected: connection.connected,
-                        connecting: connection.connecting,
-                        animation: statusPulseController,
-                      ),
-                      const SizedBox(width: 10),
                       Expanded(
-                        child: Text(
-                          statusText,
-                          overflow: TextOverflow.ellipsis,
-                          style: TextStyle(
-                            color: connection.connected
-                                ? const Color(0xFF166534)
-                                : connection.connecting
-                                ? colorScheme.primary
-                                : colorScheme.error,
-                            fontWeight: FontWeight.w600,
-                          ),
+                        child: _ConnectionSummary(
+                          connected: connection.connected,
+                          connecting: connection.connecting,
+                          endpoint: connection.host.isEmpty
+                              ? '未设置地址'
+                              : '${connection.host}:${connection.port}',
+                          deviceName: connection.name.isEmpty
+                              ? 'Windows 桌面端'
+                              : connection.name,
+                          animation: statusPulseController,
                         ),
                       ),
+                      const SizedBox(width: 8),
                       Icon(
                         headerExpanded
                             ? Icons.keyboard_arrow_up
@@ -979,6 +990,105 @@ class _InputSyncPageState extends State<InputSyncPage>
   }
 }
 
+class _ConnectionSummary extends StatelessWidget {
+  const _ConnectionSummary({
+    required this.connected,
+    required this.connecting,
+    required this.endpoint,
+    required this.deviceName,
+    required this.animation,
+  });
+
+  final bool connected;
+  final bool connecting;
+  final String endpoint;
+  final String deviceName;
+  final Animation<double> animation;
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    final iconColor = connected
+        ? const Color(0xFF16A34A)
+        : connecting
+        ? colorScheme.primary
+        : colorScheme.error;
+    final primaryTextColor = connected
+        ? const Color(0xFF166534)
+        : const Color(0xFF0F172A);
+    final secondaryTextColor = connected
+        ? const Color(0xFF15803D)
+        : colorScheme.onSurfaceVariant;
+
+    return Row(
+      children: [
+        AnimatedBuilder(
+          animation: animation,
+          builder: (context, child) {
+            return Transform.scale(
+              scale: connecting ? animation.value : 1,
+              child: Container(
+                width: 42,
+                height: 42,
+                alignment: Alignment.center,
+                decoration: BoxDecoration(
+                  color: iconColor.withValues(alpha: 0.12),
+                  borderRadius: BorderRadius.circular(8),
+                ),
+                child: Icon(
+                  connected
+                      ? Icons.sync
+                      : connecting
+                      ? Icons.sync
+                      : Icons.sync_disabled,
+                  color: iconColor,
+                  size: 24,
+                ),
+              ),
+            );
+          },
+        ),
+        const SizedBox(width: 10),
+        Expanded(
+          child: SizedBox(
+            height: 64,
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  endpoint,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(
+                    color: primaryTextColor,
+                    fontFamily: connectionInfoFontFamily,
+                    fontSize: 21,
+                    fontWeight: FontWeight.w700,
+                    height: 1.15,
+                  ),
+                ),
+                const SizedBox(height: 3),
+                Text(
+                  deviceName,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(
+                    color: secondaryTextColor,
+                    fontFamily: connectionInfoFontFamily,
+                    fontSize: 18,
+                    height: 1.15,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
 class _ConnectionIndicator extends StatelessWidget {
   const _ConnectionIndicator({
     required this.connected,

pubspec.yaml

@@ -58,6 +58,11 @@ flutter:
   # the material Icons class.
   uses-material-design: true
 
+  fonts:
+    - family: WDXL Lubrifont SC
+      fonts:
+        - asset: assets/fonts/WDXLLubrifontSC-Regular.ttf
+
   # To add assets to your application, add an assets section, like this:
   # assets:
   #   - images/a_dot_burr.jpeg